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Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
Hey, just wondering, will these kind of pumps pump water / oil through them? and
and which do you think would be better for a water / oil cooling application, im building a waterblock for my electronics lab for high power igbts ect for testing, i know i could just use normal heatsinks but. A. this is a heck of alot more interesting B. fun times :D
Registered Member #53
Joined: Thu Feb 09 2006, 04:31AM
Location: Ontario, Canada
Posts: 638
As long as its not really thick oil either of those pumps will work. However I recommend not getting the submersible kind, I've used them before in small projects and they are a god awful mess, even more so with oil. They drip oil for ages when you take them out of the tank.
Registered Member #72
Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
The second pump is certainly centrifugal, and given the advertised head, I'm sure the first one is as well. This means that the fluid should be fairly low viscosity (like water), otherwise it will load the high speed impeller with excessive drag. You want a gear or peristaltic pump for heavy oils.
Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
yeh, my plan is to get a 100mm*100mm*3mm copper sheet off ebay then take some copper pipe to school and use the mill to mill the pipe in half then solder the pipe and sheet together and drill some holes for IGBTs and Fets for my varous testings, should work well i guess, any advice?
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
I'd recommend a small submersible pump as well. A 12V bildge pump is ideal, and loads of places sell them down your way. Check out the yacht chandlers. (or Ebay).
Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
really im looking for the cheapest method possible, thats why i was looking at those 2 pumps, they are both rediculously cheap. as well as small and silent
Registered Member #3271
Joined: Mon Oct 04 2010, 02:29AM
Location: Canada
Posts: 159
I use a small 110V AC summersible pump (like the first one in your links) in my cooled CCD detector with water/glycol. Its been running for 4 years and was very cheap. The liquid keeps it cooled and lubricated in my case. So cheap that if it breaks I'll just cut off the supply and pipes and drop another one.
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
I'd go for the second type as making a 'sealed' fluid circuit would be easier and flow/speed control would be easy, the submersible types are not suitable for flow/speed control.
The 'neatest' water cooled blocks that I have come across are where a copper pipe is pressed (presumably a fairly large press) into a channel (routed I think) in the aluminium heatsink block. For a copper block I guess slightly flattening the pipe (after bending) then soldering it to the block would be 'neatest'. Raise the block and pipe to the melting point of solder as a whole and use plenty of solder (with flux), clean up the semiconductor side last. You may want to drill semiconductor package mounting holes in the block before laying cooling pipe as screw/bolt with nut is easier than tapped holes in the block.
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Water / Oil Pumps
